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Librarika: The LEGO Power Functions Idea Book, Volume 1: Machines and Mechanisms
The LEGO Power Functions Idea Book, Volume 1: Machines and Mechanisms: Isogawa, Yoshihito: 9781593276881: Amazon.com: Books
The LEGO Power Functions Idea Book, Volume 1
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LEGO Power Functions Set | No Starch Press
The LEGO Power Functions Idea Book, Vol. 2: Cars and Contraptions: Isogawa, Yoshihito: 9781593276898: Amazon.com: Books